# ret = lambda x, y: x + y
# print(ret(1, 2))

# ret = (lambda x, y: x + y) (100, 200)
# print(ret)

# print(list(range(100)))
# l=[1,2,3]
# d = {"name":"yuan"}
# s1 = str(l)
# s2 = str(d)
# print(s1, type(s1))
# print(s2, type(s2))
# import datetime
# now = datetime.datetime.now()
# print(str(now))
# print(repr(now))
# print(pow(2, 3))
# print(pow(2, 4))
# l = [12, 3, 4, 45]
# print(max(l))
# print(min(l))